In a statement, the body said: "Experts used whole genome sequencing to identify the food source, which initially was thought to be limited to frozen corn.

"As of June 8, 47 cases including nine deaths have been reported.

"The same strains of L. monocytogenes have been detected in frozen vegetables produced by the same Hungarian company in 2016, 2017 and 2018."

43 products have been recalled

More products have now been recalled from the shelves.

The FSA said: "The products might be contaminated with Listeria monocytogenes.

"Symptoms caused by this organism can be similar to flu and include high temperature, muscle ache or pain, chills, feeling or being sick and diarrhoea.

"Some people are more vulnerable to listeria infections, including those over 65 years of age, pregnant women and their unborn babies, babies less than one month old and people with weakened immune systems.

"If you have bought any of the above products do not eat them.

"Instead, return the product to the store from where it was bought for a full refund."